feat: now user can top up via redemption code (close #9)

model/redemption.go

@@ -0,0 +1,107 @@
+package model
+
+import (
+	"errors"
+	_ "gorm.io/driver/sqlite"
+	"one-api/common"
+)
+
+type Redemption struct {
+	Id           int    `json:"id"`
+	UserId       int    `json:"user_id"`
+	Key          string `json:"key" gorm:"uniqueIndex"`
+	Status       int    `json:"status" gorm:"default:1"`
+	Name         string `json:"name" gorm:"index"`
+	Quota        int    `json:"quota" gorm:"default:100"`
+	CreatedTime  int64  `json:"created_time" gorm:"bigint"`
+	RedeemedTime int64  `json:"redeemed_time" gorm:"bigint"`
+	Count        int    `json:"count" gorm:"-:all"` // only for api request
+}
+
+func GetAllRedemptions(startIdx int, num int) ([]*Redemption, error) {
+	var redemptions []*Redemption
+	var err error
+	err = DB.Order("id desc").Limit(num).Offset(startIdx).Find(&redemptions).Error
+	return redemptions, err
+}
+
+func SearchRedemptions(keyword string) (redemptions []*Redemption, err error) {
+	err = DB.Where("id = ? or name LIKE ?", keyword, keyword+"%").Find(&redemptions).Error
+	return redemptions, err
+}
+
+func GetRedemptionById(id int) (*Redemption, error) {
+	if id == 0 {
+		return nil, errors.New("id 为空！")
+	}
+	redemption := Redemption{Id: id}
+	var err error = nil
+	err = DB.First(&redemption, "id = ?", id).Error
+	return &redemption, err
+}
+
+func Redeem(key string, tokenId int) (quota int, err error) {
+	if key == "" {
+		return 0, errors.New("未提供兑换码")
+	}
+	if tokenId == 0 {
+		return 0, errors.New("未提供 token id")
+	}
+	redemption := &Redemption{}
+	err = DB.Where("key = ?", key).First(redemption).Error
+	if err != nil {
+		return 0, errors.New("无效的兑换码")
+	}
+	if redemption.Status != common.RedemptionCodeStatusEnabled {
+		return 0, errors.New("该兑换码已被使用")
+	}
+	err = TopUpToken(tokenId, redemption.Quota)
+	if err != nil {
+		return 0, err
+	}
+	go func() {
+		redemption.RedeemedTime = common.GetTimestamp()
+		redemption.Status = common.RedemptionCodeStatusUsed
+		err := redemption.SelectUpdate()
+		if err != nil {
+			common.SysError("更新兑换码状态失败：" + err.Error())
+		}
+	}()
+	return redemption.Quota, nil
+}
+
+func (redemption *Redemption) Insert() error {
+	var err error
+	err = DB.Create(redemption).Error
+	return err
+}
+
+func (redemption *Redemption) SelectUpdate() error {
+	// This can update zero values
+	return DB.Model(redemption).Select("redeemed_time", "status").Updates(redemption).Error
+}
+
+// Update Make sure your token's fields is completed, because this will update non-zero values
+func (redemption *Redemption) Update() error {
+	var err error
+	err = DB.Model(redemption).Select("name", "status", "redeemed_time").Updates(redemption).Error
+	return err
+}
+
+func (redemption *Redemption) Delete() error {
+	var err error
+	err = DB.Delete(redemption).Error
+	return err
+}
+
+func DeleteRedemptionById(id int) (err error) {
+	if id == 0 {
+		return errors.New("id 为空！")
+	}
+	redemption := Redemption{Id: id}
+	err = DB.Where(redemption).First(&redemption).Error
+	if err != nil {
+		return err
+	}
+	return redemption.Delete()
+}